Ganesha and Goddess Lakshmi are worshipped together in all important pujas. One of the popular images of Goddess Lakshmi is that of Ganesha along her side. Some of these images also include Goddess Saraswati, the goddess of learning. There is a symbolism associated in worshipping Goddess Lakshmi and Ganesha together.
Goddess Lakshmi is the goddess of prosperity and wealth. But when one is blessed with prosperity and wealth one needs a sound judgment and discernment to enjoy the prosperity and this is provided by Sri Ganesha. Ancient saints term this as ‘viveka’ – without viveka the blessing of Goddess Lakshmi will go in vain. And to keep us composed and calm we take the blessings of Ganesha.
It must be also noted that during Durga Puja – Goddess Lakshmi and Ganesha are considered as the children of Goddess Durga.